Suggestion: An approach similar to "Answer prefix (language)" or "Answer suffix (language)" attributes, on the "Display" section of a question (advanced settings) would be enough to get this functionality.
In my experience (multilingual surveys) some simple survey designs are not possible due to this functionality missing cause the text attached to the "Question validation tip" and "Sub-question validation tip" atrributes only appear in the survey's base language.

Hi... I'd like to know if this bug will be implemented someday or has been discarded definitely. Tks.

You put this in Developpement .... more a featuire request here ..

Use the good place please

Well, I did it this way cause I thought this feature already exists but may be you'll consider to improve it. If you consider this as a new feature, must I re-create this bug on the corresponding category? or... could you move it?

I don't see any place to vote for proposed enhancements. So I note here that this feature request would have a very high priority for me.

The following attributes: "Question validation tip" and "Sub-question validation tip", on the "Logic" section of a question (advanced settings) are not internationalized.

Question validation tip and Sub-question validation tip are internationalized in 3.LTS and in 4.4 (but i don't really like the new way)

Seems fixed